摘要
针对具有时变时滞和脉冲干扰的含储能单元的电力系统,提出了一种基于分段Lyapunov方法的滑模负荷频率控制策略,使得电力系统在面对通信传输时滞和脉冲干扰时依然能够实现频率的快速稳定.首先,将时变传输时滞和脉冲扰动引入电力系统中,建立新的含储能单元的电力系统负荷频率控制系统数学模型;随后,基于混合系统理论设计了一种积分形式的滑动面函数,并保证在时变传输时滞和脉冲扰动下滑模动态的指数稳定性;最后,基于有限时间控制理论和分段Lyapunov方法,设计了有效的滑模控制器,实现系统动态能够在预设时间内快速收敛到滑模面并最终收敛到平衡点.通过仿真分析验证了所提出的滑模负荷频率控制策略的有效性和适用性.
This paper proposes a sliding mode load frequency control(LFC)strategy based on the piecewise Lyapunov method for power systems integrated with energy storage units,considering time-varying delays and impulse disturbances.The strategy enables the power system to achieve rapid frequency stabilization even when facing communication transmission delays and impulse disturbances.First,time-varying transmission delays and impulse disturbances are introduced into the power system,and a new mathematical model of the LFC system for power systems with energy storage units is established.Subsequently,based on the hybrid system theory,an integral sliding surface function is designed,and the exponential stability of sliding mode dynamics under time-varying transmission delays and impulse disturbances is guaranteed.Then,based on finite-time control theory and the piecewise Lyapunov method,an effective sliding mode controller is designed to enable the system dynamics to quickly converge to the sliding mode surface within a preset time and ultimately to the equilibrium point.The simulation analysis verifies the effectiveness and applicability of the proposed sliding mode LFC strategy.
作者
丁甲
施开波
王俊
花兰锋
DING Jia;SHI Kaibo;WANG Jun;HUA Lanfeng(College of Electrical Engineering,Southwest Minzu University,Chengdu 610041,China;School of Electronic Information and Electrical Engineering,Chengdu University,Chengdu 610106,China;School of Aeronautics and Astronautics,University of Electronic Science and Technology of China,Chengdu 610054,China)
出处
《成都大学学报(自然科学版)》
2025年第4期377-382,共6页
Journal of Chengdu University(Natural Science Edition)
基金
国家自然科学基金项目(61703060,12061088)
四川省科技厅重点研发计划项目(2023YFG0287)
四川省自然科学青年基金项目(24NSFSC7038)。
关键词
负荷频率控制
滑模控制
脉冲效应
电力系统
load frequency control
sliding mode control
impulse effects
power system
